I have a 2007 25 hp 4 stroke Mercury on my Bass Tracker that completely locked down with no warning. Took it to a "cerified warranty center" for repair. Nearly 3 weeks later they tell me that the lower unit had pretty much imploded and has bound everything up. Not being specific the tech also told me that the head was locked up and they were problems up top as well. They contacted Mercury, and Mercury wants them to ship the gear casing to them for inspection even though the casing is as clean as a whistle. He said they would ship it today and finish diagnosing the top half, but had no idea about when they would get a response from Mercury or when the repair may be completed. Is this normal for Mercury and repairs? Anyone else ever had to send in parts for inspection? How long did it take?